<abstract xmlns="http://www.w3.org/1999/xhtml"> The exhaust gases from marine diesel engines contain high SO2 and NOx concentration. The applicability of the electron beam flue gas treatment technology for purification of marine diesel exhaust gases containing high SO2 and NOx concentration gases was the main goal of this paper. The study was performed in the laboratory plant with NOx concentration up to 1700 ppmv and SO2 concentration up to 1000 ppmv. Such high NOx and SO2 concentrations were observed in the exhaust gases from marine high-power diesel engines fuelled with different heavy fuel oils. In the first part of study the simulated exhaust gases were irradiated by the electron beam from accelerator. The simultaneous removal of SO2 and NOx were obtained and their removal efficiencies strongly depend on irradiation dose and inlet NOx concentration. For NOx concentrations above 800 ppmv low removal efficiencies were obtained even if applied high doses. In the second part of study the irradiated gases were directed to the seawater scrubber for further purification. The scrubbing process enhances removal efficiencies of both pollutants. The SO2 removal efficiencies above 98.5% were obtained with irradiation dose greater than 5.3 kGy. For inlet NOx concentrations of 1700 ppmv the NOx removal efficiency about 51% was obtained with dose greater than 8.8 kGy. Methods for further increase of NOx removal efficiency are presented in the paper.</abstract>

The exhaust gases from marine diesel engines contain high SO2 and NOx concentration. The applicability of the electron beam flue gas treatment technology for purification of marine diesel exhaust gases containing high SO2 and NOx concentration gases was the main goal of this paper. The study was performed in the laboratory plant with NOx concentration up to 1700 ppmv and SO2 concentration up to 1000 ppmv. Such high NOx and SO2 concentrations were observed in the exhaust gases from marine high-power diesel engines fuelled with different heavy fuel oils. In the first part of study the simulated exhaust gases were irradiated by the electron beam from accelerator. The simultaneous removal of SO2 and NOx were obtained and their removal efficiencies strongly depend on irradiation dose and inlet NOx concentration. For NOx concentrations above 800 ppmv low removal efficiencies were obtained even if applied high doses. In the second part of study the irradiated gases were directed to the seawater scrubber for further purification. The scrubbing process enhances removal efficiencies of both pollutants. The SO2 removal efficiencies above 98.5% were obtained with irradiation dose greater than 5.3 kGy. For inlet NOx concentrations of 1700 ppmv the NOx removal efficiency about 51% was obtained with dose greater than 8.8 kGy. Methods for further increase of NOx removal efficiency are presented in the paper.

Electron beam treatment of simulated marine diesel exhaust gases

National Centre for Nuclear Research (NCBJ), 7 Andrzeja Soltana Str., 05-400 Otwock/Swierk, Poland, Tel.: +48 22 273 1144, Fax: +48 22 273 1554

Institute of Nuclear Chemistry and Technology, 16 Dorodna Str., 03-195 Warsaw, Poland

Nukleonika

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

{"article-title":"Electron beam treatment of simulated marine diesel exhaust gases"}

The exhaust gases from marine diesel engines contain high SO2 and NOx concentration. The applicability of the electron beam flue gas treatment technology for...

Electron beam treatment of simulated marine diesel exhaust gases

Published Online: Sep 25, 2015

Page range: 689 - 695

Received: Sep 24, 2014

Accepted: May 20, 2015

DOI: https://doi.org/10.1515/nuka-2015-0098

Keywords
electron accelerator · electron beam treatment · free radicals · marine diesel exhaust gases · NOx removal · seawater scrubber

© by Janusz Licki

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Electron beam treatment of simulated marine diesel exhaust gases

Published Online: Sep 25, 2015

Page range: 689 - 695

Received: Sep 24, 2014

Accepted: May 20, 2015

DOI: https://doi.org/10.1515/nuka-2015-0098

Keywordselectron accelerator · electron beam treatment · free radicals · marine diesel exhaust gases · NOx removal · seawater scrubber

© by Janusz Licki

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
electron accelerator · electron beam treatment · free radicals · marine diesel exhaust gases · NOx removal · seawater scrubber